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Modeling and Simulation of a Tethered Harpoon for Comet SamplingThis paper describes the development of a dynamic model and simulation results of a tethered harpoon for comet sampling. This model and simulation was done in order to carry out an initial sensitivity analysis for key design parameters of the tethered system. The harpoon would contain a canister which would collect a sample of soil from a cometary surface. Both a spring ejected canister and a tethered canister are considered. To arrive in close proximity of the spacecraft at the end of its trajectory so it could be captured, the free-flying canister would need to be ejected at the right time and with the proper impulse, while the tethered canister must be recovered by properly retrieving the tether at a rate that would avoid an excessive amplitude of oscillatory behavior during the retrieval. The paper describes the model of the tether dynamics and harpoon penetration physics. The simulations indicate that, without the tether, the canister would still reach the spacecraft for collection, that the tether retrieval of the canister would be achievable with reasonable fuel consumption, and that the canister amplitude upon retrieval would be insensitive to variations in vertical velocity dispersion.
Document ID
20160008244
Document Type
Conference Paper
External Source(s)
Authors
Quadrelli, Marco B. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
July 1, 2016
Publication Date
August 5, 2014
Subject Category
Lunar and Planetary Science and Exploration
Meeting Information
AIAA Space 2014 Conference and Exposition(San Diego, CA)
Distribution Limits
Public
Copyright
Other
Keywords
small body